Valve-movement for steam-pumps



(NoModeL) A. J. BLAKESLEE. Valve Movement for Steam Pumps.

No. 233,318. Patented Oct, 19, 1880.

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UNITED STATES PATENT OFFICE.

ALBERT J. BLAKESLEE, OF DUQUOIN, ILLINOIS.

VALVE-MOVEMENT FOR STEAM-PUMPS.

SPECIFIQATION forming part of Letters Patent No. 233,318, dated October 19, 1880. Application filed May 3, 1880. (No model.)

To all whom it may concern Be it known that I, ALBERT J. BLAKESLEE, of Duquoin, in the county of Perry and State of Illinois, have invented a new and useful Improvement in Valve-Movemen ts for Steam- Pumps and Steam Pumpin g-Engines; and I do declare the following to be afull, clear, and exact description thereof.

My invent-ion relates to the valve-movements of steam-pumps and steam pumpingengines, and is for the purpose of moving the steam-valve so as to open and close the steamports of a steam-pum p, or of a steam pumpingengine, by a single and instantaneous movement of the valve, so as to at once open the exhaust to its fullest capacity for the escape of the waste steam, and at the same instant open the ports to admit steam to the other end of the cylinder to their full size and capacity, thus allowing no waste of powerin the stroke, and insuring the best possible results from a given amount of-steam used.

The drawing represents a view of my device, showing it in elevationi A represents a section of the piston-rod of a steam-pump, having firmly attached thereto a lug or arm, F, said lug or arm being hollow, and having therein a movable piece, E, which movable piece is constantly forced upward by a spring, g, which encircles the piece or bolt E and is inclosed by the hollow arm F. B represents the valve-rod of a steam-pum p, connected to the rocking lever or arm 0 at f, so as to move freely upon the center f. O repre sents a rocking lever or arm hung and moving freely upon the central pin, 0. D D are latches, cams, or stops hung or suspended and moving freely upon the studs or pins on a, attached to the frame of the pump, so as to fall by their own gravity when lifted. 0 c are stops attached to the frame of the pump to regulate or limit the movement of the rocking lever or arm 0.

In operating the pump, as the piston travels to the end of the forward stroke, the lug or arm F strikes the shoulder of the movable cam D at d, and, forcing it back, releases the end of the rocking lever or arm 0, which is instantly forced up against the stud c by the movable piece E, acted upon by the spring g, while at the same instant the movable cam D falls by its own weight into place on the end of the rocking arm or lever C, holding it in place until released by the lug or arm F on the return-stroke of the piston, when the lug or arm F operates in like manner, and that end of the rocking arm or lever G is forced upward, and so on vice versa. At each end of the stroke of the piston-rod A and at each movement of the rocking lever or arm 0 the steam-valve (attached to the valve-rod B,which is attached to the rocking lever or arm 0 at f) is moved a suflicientdistance to open thestcamports to their fullest capacity, and at the same instant throwing open the exhaust to its fullest extent to permit the spent steam to freely escape.

In operation, the movement of the steamvalve by my device is instantaneous, so that the full pressure of the steam is maintained to the end of the stroke, when the valve is moved instantaneously, changing the steam to the opposite end of the steam-cylinder at full pressure, with the port wide open for the returnstroke, thus causing the best possible results from a given amount of steam used.

What I claim as new is v 1. The rocking lever O and valve-rod B, pivoted thereto, in combination with the swinging latches D D and the piston-rod A, having attached thereto the lug or arm F, said lug or arm provided with the inclosed spring-bolt E,

' for actuating the rocking lever, substantially as and for the purpose specified.

2. The rocking lever or arm 0, attached to the valve-rod B, in combination with the hollow arm F, secured to the piston-rod A, said hollow arm F being provided with the inclosed spring bolt or plunger E, constructed and operating substantially as specified.

3. The combination, with the valve-rod B, of the rocking lever G, the stops 0 c, the swinging gravity-latches D D, and the hollow arm F, secured to the piston-rod, said hollow arm F being provided with an inclosed spring-bolt, E, substantially as and for the purpose specified.

In testimony whereof I, the said ALBERT J.

BLAKESLEE, have hereunto set my hand.

ALBERT J. BLAKESLEE.

Witnesses:

EDWARD S. HOOLE, ELI T. BLAKESLEE. 

